There is provided an adapter tip to be employed with an optical-fiber connector-endface inspection microscope device and an optical-fiber connector endface inspection microscope system suitable for imaging the endface of a duplex optical-fiber connector. Because of the distance between the ferrules of a duplex connector, the field of view of a typical single-fiber or multi-fiber inspection microscope may not be wide enough to allow inspection of both ferrules at once. The proposed adapter tip or microscope system may comprise relay optics configured to laterally shift the optical path of the light beam reflected from one optical fiber endface (corresponding the first ferrule) toward that from the other optical fiber endface (corresponding the second ferrule), so that both endfaces may be imaged within the field of view of the inspection microscope.